Amit Barnwal, Nikhil Dhawan
In the present study, discarded random access memory cards were evaluated as a secondary copper source. Both air and water fluidization processes were investigated as the pretreatment steps followed by thermal exposure. A significant reduction of plastic/resin content from approximately 62% in feed to around 9% was achieved in the underflow fraction of the water fluidization. Formation of the molten mass was observed at a thermal exposure of 1100°C; whereas, at 800°C, a discrete structure with copper purity of 90.2% was attained. The adopted process provided an alternative pathway for the recovery of metals without using any external additive and minimal gas generation due to the effective removal of epoxy resin. The experimental data revealed that 91% of copper values, approximately 31 g concentrate, could be recovered from 100 g of the RAM boards. The overflow product exhibited a calorific value of 4.59 x 10^6 J/kg and could be further utilized.
@article{e99f9473-48b3-4ab5-828d-393314265f8d,
title={Recovery of Copper Values from Discarded},
author={Amit Barnwal and Nikhil Dhawan},
year={2026},
language={en}
}TY - JOUR TI - Recovery of Copper Values from Discarded AU - Amit Barnwal AU - Nikhil Dhawan PY - 2026 LA - en ER -
The leachability tests for manufacturing scrap TV boards (STVB) have indicated the release of metals beyond the limit levels with potential problems f
Mudila Dhanunjaya Rao, Kamalesh K. Singh
Rapid global technological development has resulted in increased production of electronic waste, which presents both challenges and opportunities in r
Martina Laubertová, Bora Derin, Jarmila Trpčevská, Klaudia Šándorová and Emília Sminčáková
This study was performed to investigate the possibility of copper recovery from the waste printed circuit boards (WPCBs) of waste mobile phones using